Single-use syringe

A single-use syringe has piston (18) mounted in barrel (10) and detachably connected to piston rod (30) though its internal projection (26) engaged by outer projection (36) of elastic leg (34) of the piston rod. Sliding member (48) is mounted in the piston and has cam portion (50). The inside diamet...

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Bibliographische Detailangaben
Hauptverfasser:	SHVABSKY, OLEG, LEKHGOLTS, VICTOR
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	A single-use syringe has piston (18) mounted in barrel (10) and detachably connected to piston rod (30) though its internal projection (26) engaged by outer projection (36) of elastic leg (34) of the piston rod. Sliding member (48) is mounted in the piston and has cam portion (50). The inside diameter (d) of the sliding member is smaller than the diameter (D) of inside radial face (44) of the internal projection of the piston. The axial length (1) of cam portion (50) of the sliding member is smaller than the axial length (L) of the outer projection of elastic leg (34). When piston rod (30) is moved forward relative to the piston, outer projection (36) of the elastic leg engages the inside face of the sliding member (48) so as to be put into a first position of disengagement from internal projection (26) of the piston and can pass by the internal projection of the piston when the piston rod is moved back relative to the piston so as to put outer projection (36) of the elastic leg into a second disengagement position.